Creating a polygon using minimum bounding rectangle co-ordinates

[Philip]

Hello,

I have a list of point data with minimum bounding rectangle co-
ordinates (X1, X2 & Y1, Y2) for each record. Is there any way to
generate the rectangles for all points so I can see it on the map?

cheers

P

[Andy Harfoot]

The following command typed into the MapBasic window will do this:
(Work on a copy of the point table as the command will overwrite the points)

update PointTable set obj = mbr(createline(X1,Y1,X2,Y2))

Andy

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Andy Harfoot

GeoData Institute
University of Southampton
Southampton
SO17 1BJ

Tel:  +44 (0)23 8059 2719
Fax:  +44 (0)23 8059 2849

www.geodata.soton.ac.uk

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[Andy Harfoot]

You will also need to make sure that MapInfo uses the appropriate coordinate system when interpreting the coordinate values - assuming the point table is in the same coordinate system as the X1,Y1,X2,Y2 values, then this command will ensure this (run before the update command):

set coordsys table PointTable

Andy Harfoot wrote:

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